/Engine/Source/Runtime/MovieScene/Public/Evaluation/MovieSceneExecutionTokens.h
Access the execution stack's blending accumulator which is responsible for marshalling all blending operations for all animated objects
Mutable reference to the blending accumulator
const [FMovieSceneBlendingAccumulator](API\Runtime\MovieScene\Evaluation\Blending\FMovieSceneBlendingAccumulator) & GetBlendingAccumulator() const